Umicore

Showa Denko K.k.

Umicore Ag & Co Kg

Dirk Van Genechten

Stijn Put

Masataka Takeuchi

Nobuaki Ishii

Nicolas Marx

Jan Gilleir

Frank-Walter Schuetze

Stephan Eckhoff

Arihiro Muto

Kris Driesen

Yvan A Strauven

Jean-Sébastien Bridel

Jin Hu

Yasunari Otsuka

Leen Van Tendeloo

Akihiro Muto

Powder comprising particles comprising a matrix material and silicon-based domains dispersed in this matrix material, whereby the matrix material is carbon or a material that can be thermally decomposed to carbon, whereby either part of the silicon-based domains are present in the form of agglomerates of silicon-based domains whereby at least 98% of these agglomerates have a maximum size of 3 &#x3bc;m or less, or the silicon-based domains are not at all agglomerated into agglomerates.

Powder, electrode and battery comprising such a powder

Composite powder for use as electrochemically active material in an anode of a lithium ion battery, whereby the particles of the composite powder comprise a carbon-based matrix material and silicon particles embedded in this matrix material, whereby the silicon particles and the matrix material have an interface, characterized in that at this interface there are Si&#x2014;C chemical bonds present.

Composite powder for use in an anode of a lithium ion battery, method for manufacturing a composite powder and lithium ion battery

A negative electrode material for a lithium ion battery, including silicon-containing particles, artificial graphite particles and a carbonaceous material, wherein at least part of the silicon-containing particles, the artificial graphite particles and the carbonaceous material form composite particles; wherein the silicon-containing particles are silicon particles having a SiOx (0&#x3c;x&#x2264;2) layer on the particle surface, having an oxygen content of 1.0 mass % or more and 18.0 mass % or less, and mainly containing particles having a primary particle diameter of 200 nm or less; wherein the artificial graphite particles are non-flaky artificial graphite particles and have a 50% particle diameter in a volume-based cumulative particle size distribution, D50, of 1.0 &#x3bc;m or more and 15.0 &#x3bc;m or less. Also disclosed is a lithium-ion battery including a negative electrode using the negative electrode material.

Negative electrode material for lithium-ion batteries including non-flaky artificial graphite including silicon-containing particles, artificial graphite particles and carbonaceous material

Powder comprising particles comprising a matrix material and silicon-based domains dispersed in this matrix material, whereby either part of the silicon-based domains are present in the form of agglomerates of silicon-based domains whereby at least 98% of these agglomerates have a maximum size of 3 &#x3bc;m or less, or the silicon-based domains are not at all agglomerated into agglomerates.

Composite powder for use in an anode of a lithium ion battery, whereby the particles of the composite powder comprise a carbon matrix material and silicon particles embedded in this matrix material, characterized in that the composite powder further comprises silicon carbide.

Composite powder for use in an anode of a lithium ion battery, whereby the particles of the composite powder comprise silicon-based domains in a matrix, whereby the individual silicon-based domains are either free silicon-based domains that are not or not completely embedded in the matrix or are fully embedded silicon-based domains that are completely surrounded by the matrix, whereby the percentage of free silicon-based domains is lower than or equal to 4 weight % of the total amount of Si in metallic or oxidized state in the composite powder.

Composite powder for use in an anode of a lithium ion battery, method of preparing such a composite powder and method for analysing such a composite powder

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Koersel, Belgium

Dirk Van Genechten